The following is a random sample of paired values of weight measured before and after a weight-reduction program: Persons 1 2 3 4 5 6 7 8 9 10 Before 127 126 129 123 124 129 132 125 135 126 After 130 124 135 127 127 128 136 130 131 128   Test the hypothesis that a weight-reduction program has an effect at α = 0.05.

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  1. The following is a random sample of paired values of weight measured before and after a weight-reduction program:

Persons

1

2

3

4

5

6

7

8

9

10

Before

127

126

129

123

124

129

132

125

135

126

After

130

124

135

127

127

128

136

130

131

128

 

Test the hypothesis that a weight-reduction program has an effect at α = 0.05.

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